"Nor from below," said Mr. Merryweather, striking his stick upon the flags which lined the floor. "Why, dear me, it sounds quite hollow!" he remarked, looking up in surprise.
"I must really ask you to be a little more quiet!" said Holmes severely. "You have already imperilled the whole success of our expedition. Might I beg that you would have the goodness to sit down upon one of those boxes, and not to interfere?"
The solemn Mr. Merryweather perched himself upon a crate, with a very injured expression upon his face, while Holmes fell upon his knees upon the floor and, with the lantern and a magnifying lens, began to examine minutely the cracks between the stones. A few seconds sufficed to satisfy him, for he sprang to his feet again and put his glass in his pocket.
"We have at least an hour before us," he remarked, "for they can hardly take any steps until the good pawnbroker is safely in bed. Then they will not lose a minute, for the sooner they do their work the longer time they will have for their escape. We are at present, Doctor--as no doubt you have divined--in the cellar of the City branch of one of the principal London banks. Mr. Merryweather is the chairman of directors, and he will explain to you that there are reasons why the more daring criminals of London should take a considerable interest in this cellar at present."
"It is our French gold," whispered the director. "We have had several warnings that an attempt might be made upon it."
"Your French gold?"
"Yes. We had occasion some months ago to strengthen our resources and borrowed for that purpose 30,000 napoleons from the Bank of France. It has become known that we have never had occasion to unpack the money, and that it is still lying in our cellar. The crate upon which I sit contains 2,000 napoleons packed between layers of lead foil. Our reserve of bullion is much larger at present than is usually kept in a single branch office, and the directors have had misgivings upon the subject."
"Which were very well justified," observed Holmes. "And now it is time that we arranged our little plans. I expect that within an hour matters will come to a head. In the meantime Mr. Merryweather, we must put the screen over that dark lantern."
"And sit in the dark?"
"I am afraid so. I had brought a pack of cards in my pocket, and I thought that, as we were a partie carree, you might have your rubber after all. But I see that the enemy's preparations have gone so far that we cannot risk the presence of a light. And, first of all, we must choose our positions. These are daring men, and though we shall take them at a disadvantage, they may do us some harm unless we are careful. I shall stand behind this crate, and do you conceal yourselves behind those. Then, when I FLASH a light upon them, close in swiftly. If they fire, Watson, have no compunction about shooting them down."
I placed my revolver, cocked, upon the top of the wooden case behind which I crouched. Holmes shot the slide across the front of his lantern and left us in pitch darkness--such an absolute darkness as I have never before experienced. The smell of hot metal remained to assure us that the light was still there, ready to FLASH out at a moment's notice. To me, with my nerves worked up to a pitch of expectancy, there was something depressing and subduing in the sudden gloom, and in the cold dank air of the vault.
"They have but one retreat," whispered Holmes. "That is back through the house into Saxe-Coburg Square. I hope that you have done what I asked you, Jones?"
"l have an inspector and two officers waiting at the front door."
"Then we have stopped all the holes. And now we must be silent and wait."
What a time it seemed! From comparing notes afterwards it was but an hour and a quarter, yet it appeared to me that the night must have almost gone and the dawn be breaking above us. My limbs were weary and stiff, for I feared to change my position; yet my nerves were worked up to the highest pitch of tension, and my hearing was so acute that I could not only hear the gentle breathing of my companions, but I could distinguish the deeper, heavier in-breath of the bulky Jones from the thin, sighing note of the bank director. From my position I could look over the case in the direction of the floor. Suddenly my eyes caught the glint of a light.
At first it was but a lurid spark upon the stone pavement. Then it lengthened out until it became a yellow line, and then, without any warning or sound, a gash seemed to open and a hand appeared; a white, almost womanly hand, which felt about in the centre of the little area of light. For a minute or more the hand, with its writhing fingers, protruded out of the floor. Then it was withdrawn as suddenly as it appeared, and all was dark again save the single lurid spark which marked a chink between the stones.
Its disappearance, however, was but momentary. With a rending, tearing sound, one of the broad, white stones turned over upon its side and left a square, gaping hole, through which streamed the light of a lantern. Over the edge there peeped a clean-cut, boyish face, which looked keenly about it, and then, with a hand on either side of the aperture, drew itself shoulder-high and waist-high, until one knee rested upon the edge. In another instant he stood at the side of the hole and was hauling after him a companion, lithe and small like himself, with a pale face and a shock of very red hair.
